Push-button lock



March 7, EGOR PUSH BUTTON LOCK Filed Oct. 20, 1948 JNVENTOR. 5%5/1. Eq 05, BY a g M ATT Y- Patented Mar. 7, 1950 PATENT orm-cs- PEISHBUTTONx-LOGK :n giro vdliey StreamJNLY. 'Application October 20, 19.48,seninnorssnso This invention relates". to :new Aland uprovements in-locks, andhas more particular reference to locks OflthQPlISh button type, 'I Zhese 1oc-ks.; are associated-with knobs: Jpcatednongzop- ,posite' sides; ofa door. when theg'push buttomis positioned rinwards, one a of ithe 11110013 .slgnobs; .is locked :against being; turned: so, aspto'be ncap ble :ofwoperating the latch of the door, '{Ihe "other knobzisz capable of beingxturned because-flit .is

' associated-Wilma cam for m v n thepu h u q back to itsout position.

Heretofore; locks: :ofu the 7, push button type :in- =cluded= a control cam connectedwithrthfi push :button and operated byccams cQnnec-tedwitn the control: knob, thexknob, whichmay' ope h 4 8 at all times. Theselocks alsoiincluded cooperaative keeper elements -wonking= between: the push button and. 1 members -connected 'with the door knob which isrlocked.

This invention particularly; proposes improvements in thermechanisrn and cams operating between the push button and the door knobs. It is proposed to associate a control: disc with-the *knob'which'may, be turned for opening; the look.

It is furthenproposed tovassociatera keepertdisc,

with the knobwhichxis 'lockedsatjatimes. L-Itris ,proposed to; provide the} 1 115111 button withra certainenlargement formed in a certain wway oooperative.- with 0am and lockingelementsv'upon these discs, :The'advantage or the new":construe-v tion resides in its.=simpl-icity-=by-which:the :lock may be manufactured'.;exceptionallycheapwand in the durable construction.

Another important ifeature of n this: invention resides in associating a spring with theucontrol disc:v ina' certain way: by-cwlfi'ch thetidiscs arernor- 1 mally urged: and held 9 in: positions-rm '-.which-s:the push button is: free" to :be pushediinwards.

For further :.:comprehension :of T the; invention,

; and-tofithe obj ectsjzalid advantages;thereofprefer :ence will 'be had to the' following description and accompanying drawing, and lto -the appended claims in which the rvariousi'novel" features of :the' inventionare more'particularlyiseti forth.

In the accompanying drawing forming amaterial part ofthis disclosure- Fig. 1 isan elevationalview-of '=apush"button lock constructed in accordancewith thisi'nven- 'tion, certain parts being broken" away; to :vdisclose interior parts, and said loci; beingfil'lustrated a o ate with a ch mati showing o door an latch,

.TFig..'.2:is an enlarged transverseliseotionahview taken on the: line 2-v-2: of.'Fig;.1.

F'ig. 3 is a fragmentary enlarged-sectional view .takenon-the linev 3fi?,of;.Fig.1

Fig, 4 is ap side elevational view-ofthe control i t an it outer: 19 used-in-therpa hw o "-ment onv the face-of door I l provide d withaa said-- outer wall 1 l5.

. latch ll-having a bolt [3 which. may-l be moved inwards-and outwards .by tnr ningaac square rod 14; passing through the door. I Iv and through the latch 12. The door H, the-latch.'lZyandJitsbQIt 3.are; illustrated in dotandtdashlline s. uponthe Idnawmg as-they form no partofL-this invention andsa-renot soldwith the pushsbuttoni 1-ock;.de-

scribed herein. lTh e:ho11ow flange [El as-tan 'outer wall 15. A cover plate. I6 is mountedacross ,the. inner face of the flange l0 and, ishel'dfein position with screws H.

-A- door- .knob, I8; is tnrnaloly .mounted through This door knob, l8. .willitbe named the control knob: as it. is theeonerwhich i may: always be turned for operating theel atchg I2.

Thedoor knob IB hasta reducedinnenendll!) wlhicht engagesthrou ha central opening in, the outer wall 15. .A ring...20. is mountedruponi'the i-inner. end l9 and engages against-the inner; face of thelonter wall I 5.for.suppqrtingthedoorknob 1,8, in its turnable position.

- The rod M will-now be. name d uaniinner'rod -becausea.it. is inwardsofthe outervwallllfi, LAn router rod-.22 is nonerotativelyv-and slidablyamount- -.ed..-axia 1l-y in the inner end of said 7 control. knob 1,8,: and; rotativelyextends into the hollow: O fLSaid vieflange ID. This outer rod 22 wis-.square inicross peg,.25 whichcengagesa complementary asectionand. engages a complementaryopening f ormedl in the knob 1-8 by which the rod. is nonrotatively and sl-idably-connected with the knob l8. The-said outer rods-2 2 is,provided1atits; inner \endwith' acontrol rdiscs24 axially-10f the .122 rand housed insaid hollowiflange; L0,, and-engaging against the inner end of .lthefldoor-knobj [8. The. inner, rod l4 isiaxiallysaligned -and turnably connected with the outer rod 22 and turnably c eXtendsth-rough-theicoversplatet6. One;of.t l mds ame y e 0 ,4 ,,is rql'vi diwi h in the outer rod 22 .by iwhich these. rods-larettuifnaablyconnected.

The inner-l rod M. is 'providedwithxa keeper disc :Z'daxially of said inner rod M: and housed intthe rhollovg :ot the. flange l 6- and spaced from thezco'nengages against the cover plate |6. Since the control disc 24 engages the inner end of the knob l8, and since the discs 24 and 26 are separated by the shoulder 21, they are held against longitudinal motion but they are free to be turned. A peg 28 projects from and is eccentric of the keeper disc 26 and engages in a short arcuate slot 29 formed in the control disc 24 in order that said discs 24 and 26 may be turned together, except for a slight amount of play produced by said short slot 29.

A push button 39 is slidably mounted eccentrically of and through said flange It. The push button 30 is connected with an enlargement 3| which slidably engages in a complementary opening 32 formed in the flange ID, by which the push button 30 is slidabl disposed parallel to the axes of the rods l4 and 22. This enlargement 3| is slightly shallower than the depth of the space between the outer wall l and the cover plate l6 and limits sliding of the push button 30 from an out position to an in position. In an out position the enlargement 3| engages the outer wall l5, and in an in position the enlargement 3| engages the cover plate H3.

The control disc 24 is formed with a peripheral cut 34 having cam shaped edges 35 complementar to any cooperative with a cam 36 formed on the enlargement 3|. This cam 36 has inclined surfaces 3'! adapted to mate with the inclined surfaces 35 in the in position of the push button 30. These surfaces 35 and 3! are so inclined that when the control disc 24 is turned, the surfaces 35 cam outwards against the surfaces 31 in order to move the push button 30 to its out position.

Said keeper disc 26 is formed with a keeper slot 39 cooperative with a projection 49 formed on the enlargement 3| for latching the keeper disc 26 from turning when said push button 30 is in its in position. Said enlargement 3| is also provided with a space 4| between said cam 36 and said projection 49 through which the control disc 24 may turn when said push button 30 is in its out position. Fig. 1 shows the push button 30 in its out position and it should be noted that the projection 49 is to the outside of the keeper slot 39 so that the keeper disc 26 is free to turn. In this position of the push button 30, the control disc 24 is free to pass through the space 4|.

An expansion spring 45 is mounted along a pair of opposed grooves 46 and 41 formed along the periphery of said control disc 24 and the outer wall l5 of the hollow flange I. More particularly, the groove 41 is formed along the control disc, while the groove 46 is formed along the inner face of the outer wall I5 of the flange ID. This spring 45 has its ends resting upon the ends of the grooves 46 and 41. More particularly, the

spring 45 rest at the points 48 comprising the ends I of the groove 46 and simultaneously rested upon the points 49 comprising the ends of the groove 41. The points 49 are enlarged to form shoulders for supporting the spring 45. These enlargements 49 may be clearly seen in Fig. 4. The spring 45 normally holds and urges the control disc 24 into a position in which its cam surface 35 is aligned with the cooperative cam 36 of said enlargement 3| in order that said push button 39 may be pushed inwards to its in position.

The inner rod M is associated with a door knob 50. This door knob 50 has a reduced end 5| passing through the wall 52 of a hollow flange 53 mounted on the door The door knob 59 is turnably mounted on the wall 52 by a ring 54 vwhichengages upon the end 5| and engages the 4 inner face of the wall 52. A cover plate 55 is mounted across the inner face of the flange 53 and is held in position with screws 55. The flanges 0 and 53 are formed with openings 51 for screws by which they may be attached to the door A stem 58 projects from the enlargement 3| and is aligned with an opening 59 formed in the door II and with another opening 60 formed in the flange 53. In an emergency the latch |2 may be opened on the knob side 50 of the door by engaging a small implement through the openings 60 and 59, and pushin the stem 58 to move the push button 30 to its out" position.

The operation of the push button lock may be understood from the following:

With the parts in the positions illustrated in Fig. 1, the knobs l8 and 59 may be turned to operate the latch I2 to withdraw and extend its keeper |3. The push button lock may be locked from one side of the door, merely by pushing in the push button 30 to its in position. The in position is one in which the projection 40 engages the opening 39 of the keeper disc 26 and in which the cam 36 engages in the opening 34 of the control disc 24 so that the cam faces 35 and 31 engage each other. Now the knob 50 cannot be turned because the keeper disc 26 is held non-rotative by the projection 40 engaging the slot 39. However, the door knob l8 may be turned for opening the latch |2 because the control disc 24 may turn a slight distance in one direction or the other, relative to the keeper disc 26 which is held stationary, since there is slight play between the peg 28 and the ends of the arcuate slot 29. When the knob I8 is turned the control disc 24 is correspondingly turned and the cam surfaces 35 working against the cam surfaces 31 move the push button 30 to its out" position. In the out position the projection 40 is moved clear of the opening 39. Simultaneously, the control disc 24 is aligned with the space 4| so that it may be turned. Now the knob l8 may turn a sufficient distance to oper-- ate the latch |2 to withdraw the bolt |3.

In an emergency the latch |2 may be opened from the knob side 50 by engaging an implement through the openings 60 and 59 and pushing the stem 58 to move the push button 30 to its out" position.

While I have illustrated and described the preferred embodiment of my invention, it is to be understood that I do not limit myself to the precise construction herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by United States Letters Patent is:

1. In a push button lock, a hollow flange, a control disc and a coaxial keeper disc turnably connected in spaced positions within said hollow flange, means for turning said control disc, and a push button slidably mounted eccentrically of and through said flange parallel to the axes of said discs and having an enlargement within said. hollow flange, means for limiting sliding of said push button to an out and an in position, said control disc and said enlargement having cooperative cams normally engaging each other for moving said push button into its out position when said control disc is turned, said keeper disc having a slot and said enlargement having a cooperative projection engageable therein for locking said keeper disc from turning when said push button is in its in position, and said enlargement having a space between its cam and its projection through which said control disc may turn when said push button is in its out position in order that said spaced discs are free to turn.

2. In a push button lock, a hollow flange, a control disc and a coaxial keeper disc turnably connected in spaced positions within said hollow flange, means for turning said control disc, and a push button slidably mounted eccentrically of and through said flange parallel to the axes of said discs and having an enlargement within 1 said hollow flange, means for limiting sliding of said push button to an out and an in position, said control disc and said enlargement having cooperative cams normally engaging each other for moving said push button into its out position when said control disc is turned, said keeper disc having a slot and said enlargement having a cooperative projection engageable therein for locking said keeper disc from turning when said push button is in its in position, and said enlargement having a space between its cam and its projection through which said control disc may turn when said push button is in its out position in order that said spaced discs are free to turn, one of said discs having a shoulder engaging the other ofsaid discs for holding them in said spaced positions.

3. In a push button lock, a hollow flange, control disc and a coaxial keeper disc turnably connected in spaced positions within said hollow flange, means for turning said control disc, and a push button slidably mounted eccentrically of and through said flange parallel to the axes of said discs and having an enlargement within said hollow flange, means for limiting sliding of said push button to an out and an in position, said control disc and said enlargement having c0- operative cams normally engaging each other for moving said push button into its out position when said control disc is turned, said keeper disc having a slot and said enlargement having a cooperative projection engageable therein for locking said keeper disc from turning when said push button is in its in position, and said enlargement having a space between its cam and its projection through which said control disc may turn when said push button is in its out position in order that said spaced discs are free to turn, one of said discs having a shoulder engaging the other of said discs for holding them in said spaced positions, and a peg axially of one of said discs engaging an opening axially of the other of said discs for supporting them in said turnably connected positions.

4. In a push button lock, a hollow flange, a control disc and a coaxial keeper disc turnably connected in spaced positions within said hollow flange, means for turning said control disc, and a push button slidably mounted eccentrically of and through said flange parallel to the axes of said discs and having an enlargement within said hollow flange, means for limiting sliding of said push button to an out and an in position, said control disc and said enlargement having cooperative cams normally engaging each other for moving said push button into its out position when said control disc is turned, said keeper disc having a slot and said enlargement having a cooperative projection engageable therein for locking said keeper disc from turning when said push button is in its in position, and said en- 6 largement having a space between its cam and its projection through which said control disc may turn when said push button is in its out position in order that said spaced discs are free to turn, and an expansion spring mounted along a pair of opposed arcuate grooves formed along the periphery of said control disc and the adjacent wall of said flange and resting against the ends of said grooves and normally holding and urging said control disc into a position in which its cam is aligned with the cooperative cam of said enlargement in order that said push button may be pushed inwards to its in position.

5. In a push button look, a hollow flange for attachment upon the face of a door and havin an outer wall, a cover plate mounted across the inner face of said flange, a door knob turnably mounted on and through said outer wall, an outer rod non-rotatively and slidably mounted axially in the inner end of said door knob and rotatively extending into said flange and provided at its inner end with a control disc axial of said rod and housed in said hollow flange, said control disc engaging the inner end of said door knob, an inner rod for extending through said door for operating a latch mounted on said door and for supporting a second door knob, said inner rod being axially aligned and turnably connected with said outer rod and turnably extending through said cover plate and provided with a keeper disc axially of said inner rod and housed in said hollow flange and spaced by a shoulder from said control disc and engaging against said cover plate, a peg eccentrically on one of said discs engaging a short slot in the other of said discs in order that said discs turn together except for slight play produced by said short slot, a push button slidably mounted eccentrically of and through said flange parallel to said rods and having an enlargement within the hollow of said flange engageable in an out position of said push button with the outer wall of said flange and in an in position of said push button with said cover plate, said control disc and said enlargement having cooperative cams normally engaging each other for moving said push button into its out position when said control disc is turned, said keeper disc having a slot and said enlargement having a cooperative projection engageable therein for locking said keeper disc from turning when said push button is in its in position, said enlargement having a space between its said cam and its said projection through which said control disc may turn when said push button'is in its out position, and an expansion spring mounted along a pair of opposed grooves formed along the periphery of said control disc and said outer wall of the hollow flange and resting against the ends of said grooves and normally holding and urging said control disc into a position in which its cam is aligned with the cooperative cam of said enlargement in order that said push button may be pushed inwards to its in position.

BASIL EGOR.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,264,420 Voight Dec. 2, 1941 2,295,435 Teich Sept. ,8, 1942 

